Thermostatic control means for motors



"L. CAMMEN. THERMOSTATIC CONTROL MEANS FORMOTORS.

APPLICATION FILED lULY h 1918.

. Lw fifin Patented Mag '13, 1919.

o by sAbxen'e WILHELMS CORR NY LEON GAMMEN; OF NEW YORK. Y; I

rnnnmosmrrc' ooN'rnoL MEANS ron. morons Specification of Letters Patent.

I Patented May 13, 1919.

Original application filedJ'anuary 21, 1918, Serial No. 213,109. Divided and. this application filed Ju ly 1, i

To all whom-it may concern:

Be it known that I, 1 LEV'N CAMMEN, citizen of the United States, and resident of the. borough of Manhattan, in the city, 5'county, and State of New York, have in- 'vehted certain new and useful Improvements'in Thermostatic ,Control Means for v gasesfio thereby protect the radiator water from excessive cooling and possible freezing. The temperature control means which I v 2 0 employ for heating the radiator water, may

function through the medium of a then-mo static jvalve, which itself is actuated'by a v variation, temperature of the -jacket', wa-

ter. I

'Other' featuresjand -advantages of niy cas ng 8.. This pipel9 may have a jacket,

- as 9.620, which is included injithe exhaust invention willhereinafter appear. v Figure L is a side elevation of a power plant embodying my thermostatic control means as applied tothe radiator water;

Fig.2 is a detailof the valve in the bypass; r 1

' i Fig.3 isia detail of the gravity valve in the radiaton'and, I Fig. 4 is-a'detai-l of a modification.

tended for use eitherwith a road -vehicle-or with aircraft, and includes "the motor cyline 'der 1, water jacket 2 therefor,"pnmpeia andradiator .4; For.v convenience I have i1lus'- ;A9 trated herewith the dpnble circulating sys-' tem foimdfin my Patent No. 1,256,109 wherei'na radiator" 5 is included, by pipes 6, 7, in 'a..closed circuit',.with jacket 2; and a casing 8 incloses said radiator 5, which easing, by-

pipes '9, 10, is included'in circuit with the air cooled}radiator t. I

Assuming that water passes from jacket 2 through pipe 6 to radiator 5, and returns.

through-pipe 7, then a thermostatic device 11 is located in pipe '6, to be influenced by the temperature thereof, and to control a v' alve. 12 in pipe 9, whereby increase of tom- Them-m1- layout herein indicated is in 1918. Serial No. 242,877.

perature in pipe 6, representing ekcessive heat in thejacket 2, will cause the thermw static device 11, bystem 11", to open the valve 12, thus permitting water to flow be-.- tween the casing and radiator 4., It should be understood that while the jacket-temperature is not excessive, the valve 12 will remain closed, because the thermostatic de- 6.0-

vice 11 will not be actuated to open. said valve, and that when the valve 12 is closed the water of the closed circuit system will not be subjected to the' cooling influence of the Water from radiator 4. I

In devising meansfolr the application of heat to the radiator water, when, for example, as in the system indicated, the flow 0f cooling water from the air cooled; radiator v is checked during the operation ofythe motor, and it is desirable to prevent the radiator water from cooling unduly orfreezing,

I may, for example, provide a return duct whichI Tcall a b -pass, as a pipe 19, so artherefrom without allowing it to enter the pipe-21, and furnishes heat to the water passing through-said i-pe 19, sorthat water from the influence of the engine heat.

'-'The terminal of pipe 19 within the radiator may have a valve seat 22, to receive a I valve 23, having stem 24; the .purpose of saidwalve'fieihg to normally Tpiovide means, through. the welght of water upon. said valve, to prevent the flow of water from the radiator into pipe 19' when" the by-pass is closed and' the radiator water is to circulate through the casing 8; but when the .yalve 12v -is actuated to open the by-pass, and to close the path to casing 8, thenzthe valve 23 will open under theinfluence of any? steam pres- -sure that may be generated in pipe l9.

The .by-pass plpe 19, where jacketed by the exhaust, maybe provided with a removable 1'00 covering 25, as of asbestos, to protect said pipe from injury when, as in summer, its service is not required.

v In the modification of my invention il1ustrated in Fig. 4, I haveshown a icy-pass pipe 26, between the engine exhaust pipe '21 and radiator-4. A valve 27 in the exhaust pipeserves to deflect a portion of the hot exhaust gases to by-pass pipe 26, to be conducted thereby'to the interior ofthe radiator, to moderately heat the water therein. As shown, the by-pass pipe 26 takes the form, within the radiator, of a heating coil 28, Whose terminal 29 extends outside the radiator, to discharge the heated products to the atmosphere.

Obviously the by-pass pipe 26 and heating-coil 28 are intended for use, in some instances, instead of the bypass pipe'19. The valve 27, which controls the admission of a portion of the exhaust gases from exhaust 1. The combination with. an internal combustion motor having a circulatory cooling system inoludlng a radiator, of an alternate return duct 1n communlcatlon with said radiator, means for'heating said return duct,

means to direct fluid flow from said radiator either into cooling :relation with said motor or to divert said fluid flow to said-re turn duct, and means controlled by the temperature of said motor to-actu'ate said flow directing and diverting means.

-2. The combination with aninternal combustion motor having a circulatory cooling system including a radiator, of-an alternate return duct in communication with said radiator, means for heating said return duct, and thermostatic means controlled by the motor temperature to direct the fluid flow from said radiator either into cooling relation with said motor or to divert said fluid flow to said return duct.

8. The combination with an internal com-- bustion' motor having a circulatory cooling system lncluding a pump anda radiator, of

an alternate return duct in communication with said radiator, heating me-ansfor said return duct, said duct terminating within said radiator in an upturned valve seat, a

vgravity valve therein, normally held closed by fluid weight, and thermostatic means controlled by the motor temperature to direct the fluid flow from said radiator either into. cooling relation with said motor or to dlvert said fluid flow back to said radiator through said return duct.

' Signedat the borough of Manhattan in ithevcity, county,and State of New York this 29th day of June, A. D. 1918.

LEON oAMuEN. Witnesses F. W BARKER, 'A. B. BARKER. 

